{
  "manageEntity": {
    "action": "Save",
    "entityId": "1016855894",
    "entityType": "Track",
    "nonce": "0x3ed23a48a7ea5dd2275dfe99018d83b91086cb21b4c8b37c1591b0e416d87bf2",
    "signature": "0x07910bbbc568f7f3c568e8f5cd73f2a05fc5f59ad8cd103af81d07b0220b3eac7d35522414f241fa8a3ded25a6dbf15bb33628cbdb242ba2d788cc3c6ae76dce1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}